参数资料
型号: IDT74FCT139ATQ8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 编、解码器及复用、解复用
英文描述: FCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封装: QSOP-16
文件页数: 4/6页
文件大小: 79K
代理商: IDT74FCT139ATQ8
INDUSTRIALTEMPERATURERANGE
4
IDT74FCT139AT/CT
FASTCMOS1-OF-4DECODERWITHENABLE
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ΔICC
Quiescent Power Supply Current
VCC = Max.
0.5
2
mA
TTL Inputs HIGH
VIN = 3.4V(3)
ICCD
Dynamic Power Supply
VCC = Max.
VIN = VCC
0.15
0.3
mA/
Current(4)
Outputs Open
VIN = GND
MHz
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
VIN = VCC
1.5
4
mA
Outputs Open
VIN = GND
fo = 10MHz
50% Duty Cycle
VIN = 3.4V
1.8
5
One Input and
VIN = GND
One Output Toggling
VCC = Max.
VIN = VCC
—3
7(5)
mA
Outputs Open
VIN = GND
fo = 10MHz
50% Duty Cycle
VIN = 3.4V
3.5
9(5)
One Input Toggling
VIN = GND
on each decoder
Two Outputs Toggling
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input; (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of
ΔICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC +
ΔICC DHNT + ICCD (fONO)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL)
fO = Output Frequency
NO = Number of Outputs at fO
All currents are in milliamps and all frequencies are in megahertz.
POWER SUPPLY CHARACTERISTICS
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
74FCT139AT
74FCT139CT
Symbol
Parameter
Condition(1)
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
PropagationDelay
CL = 50pF
1.5
5.9
1.5
5
ns
tPHL
A0 or A1 to
OxRL = 500
Ω
tPLH
PropagationDelay
1.5
5.5
1.5
4.8
ns
tPHL
E to Ox
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
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